Answer in short. 1. How are time period and frequency of a sound wave related? 2. How does the loudness of a sound wave depend on its amplitude? 3. Name the characteristic which differentiates a shrill sound from a flat sound of same amplitude. 4. How can we increase the pitch of a sitar? 5. Name the characteristic of sound which allows us to distinguish between two sounds of the same pitch and loudness. 6. Draw a diagram showing the wave pattern of (a) a loud and a feeble sound. (b) a flat and a shrill sound. 7. Calculate the time period of a wave having a frequency of 512 Hz.
Answers
Answer:
1) The time taken to complete one vibration is called time period. Frequency and time period is inversely proportional, the number of vibrations per second is frequency.
2) It depends on the amount of energy that started the waves. Greater amplitude waves have more energy and greater intensity, so they sound louder. ... The same amount of energy is spread over a greater area, so the intensity and loudness of the sound is less.
3) We can differentiate between a shrill and a flat sound by its pitch. Flat sound has low pitch whereas shrill sound has high pitch.
4)Suppose when we pluck a string of the sitar it starts vibrating with low amplitude and if we apply more energy by plucking more strongly, the string will vibrate with the greater amplitude and produce a loud sound. As the amplitude of vibration increases, sound also increases.
5) the quality or timbre of sound.
7) f = 512hz.
c=330m/s.
λ=?
λ=c/v.
=330/512.
= 0.644 m.
Q 6 answer in image
